HP Omni 200-5000 Guia do Utilizador descarregar pdf (Página 93)

RM500SL

User's Guide Version 3.12



March 2015

appear in the Test 1 curve, it may indicate that the hearing aid has no gain at the selected band frequency.

This does not mean that the hearing aid will be unable to transpose the band to a lower frequency when

frequency lowering is enabled.

6. Program the hearing instrument to activate the frequency-lowering feature.

7. Select Test 2 and select the same stimulus and stimulus level used in Test 1.

8. Press <Continue> to measure and store the long-term signal-averaged result.

9. The isolated band should now appear at a lower frequency and should reach or exceed threshold at its new

location as shown below. Note that the 'cavity' between 1 kHz and the isolated band may be partially or

completely filled in by noise within the hearing aid which will make the isolated band appear less distinct in

the test curves.

10. Once the frequency-lowering properties of the hearing instrument have been verified, use one of the Speech-

std stimuli to verify aided speech audibility or target match (as described elsewhere in this section) for

frequencies below the isolated band.

FM fitting and verification

FM Offset or FM Transparency method in Speechmap (after Platz 2004)

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HP Omni 200-5000 Guia do Utilizador Página 93